This pagina contains sample addresses and/or private keys. Do not send bitcoins to or invoer any sample keys, you will lose your money.
A private key te the setting of Bitcoin is a secret number that permits bitcoins to be spent. Every Bitcoin wallet contains one or more private keys, which are saved ter the wallet verkeersopstopping. The private keys are mathematically related to all Bitcoin addresses generated for the wallet.
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Because the private key is the “toegangsbewijs” that permits someone to spend bitcoins, it is significant that thesis are kept secure. Private keys can be kept on pc files, but te some cases are also brief enough that they can be printed on paper.
Some wallets permit private keys to be imported without generating any transactions while other wallets or services require that the private key be swept. When a private key is swept, a transaction is broadcast that sends the cómputo managed by the private key to a fresh address ter the wallet. Just spil with any other transaction, there is risk of swept transactions to be double-spending.
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Ter tegenstelling, bitcoind provides a facility to invoer a private key without creating a sweep transaction. This is considered very dangerous, and not intended to be used even by power users or experts except te very specific cases. Bitcoins can be lightly stolen at any time, from a wallet which has imported an untrusted or otherwise insecure private key – this can include private keys generated offline and never seen by someone else  [Two] .
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An example private key
Ter Bitcoin, a private key is a 256-bit number, which can be represented one of several ways. Here is a private key te hexadecimal – 256 onaardig te hexadecimal is 32 bytes, or 64 characters ter the range 0-9 or A-F.
Range of valid ECDSA private keys
Almost every 256-bit number is a valid ECDSA private key. Specifically, any 256-bit number from 0x1 to 0xFFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFE BAAE DCE6 AF48 A03B BFD2 5E8C D036 4140 is a valid private key.
The range of valid private keys is governed by the secp256k1 ECDSA standard used by Bitcoin.
Hierarchical Deterministic (HD) Wallet Keys
Wallet software may use a BIP 32 seed to generate many private keys and corresponding public keys from a single secret value. This is called a hierarchical deterministic wallet, or HD wallet for brief. The seed value, or master extended key, consists of a 256-bit private key and a 256-bit chain code, for 512 kattig ter total. The seed value should not be confused with the private keys used directly to sign Bitcoin transactions.
Users are strongly advised to use HD wallets, for safety reasons: An HD wallet only needs to be backed up merienda typically using a mnemonic phrase, thereafter ter the future, that single backup can always deterministically regenerate the same private keys. Therefore, it can securely recover all addresses, and all funds sent to those addresses. Non-HD wallets generate a fresh randomly-selected private key for each fresh address, therefore, if the wallet opstopping is lost or bruised, the user will irretrievably lose all funds received to addresses generated after the most latest backup.
Base58 Wallet Invoer format
When importing or sweeping ECDSA private keys, a shorter format known spil wallet invoer format is often used, which offers a few advantages. The wallet invoer format is shorter, and includes built-in error checking codes so that typos can be automatically detected and/or corrected (which is unlikely ter hex format) and type kattig indicating how it is intended to be used. Wallet invoer format is the most common way to represent private keys te Bitcoin. For private keys associated with uncompressed public keys, they are 51 characters and always embark with the number Five on mainnet (9 on testnet). Private keys associated with compressed public keys are 52 characters and embark with a haber L or K on mainnet (c on testnet). This is the same private key ter (mainnet) wallet invoer format:
When a WIF private key is imported, it always corresponds to exactly one Bitcoin address. Any utility which performs the conversion can display the matching Bitcoin address. The mathematical conversion is somewhat ingewikkeld and best left to a pc, but it’s extraordinario that the WIF assures it will always correspond to the same address no matter which program is used to convert it.
The Bitcoin address implemented using the sample above is: 1CC3X2gu58d6wXUW _SAMPLE_ADDRESS_DO_NOT_SEND_ MffpuzN9JAfTUWu4Kj
Mini private key format
Some applications use the mini private key format. Not every private key or Bitcoin address has a corresponding mini private key – they have to be generated a certain way ter order to ensure a mini private key exists for an address. The mini private key is used for applications where space is critical, such spil ter QR codes and ter physical bitcoins. The above example has a mini key, which is:
Any Bitcoins sent to the address 1CC3X2gu58d6wXUW _SAMPLE_ADDRESS_DO_NOT_SEND_ MffpuzN9JAfTUWu4Kj can be spent by anybody who knows the private key implementing it te any of the three formats, regardless of when the bitcoins were sent, unless the wallet receiving them has since made use of the coins generated. The private key is only needed to spend the bitcoins, not necessarily to see the value of them.
If a private key controlling unspent bitcoins is compromised or stolen, the value can only be protected if it is instantaneously spent to a different output which is secure. Because bitcoins can only be spent merienda, when they are spent using a private key, the private key becomes worthless. It is often possible, but inadvisable and insecure, to use the address implemented by the private key again, ter which case the same private key would be reused.